27897713 has 2 divisors, whose sum is σ = 27897714. Its totient is φ = 27897712.

The previous prime is 27897707. The next prime is 27897733. The reversal of 27897713 is 31779872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21687649 + 6210064 = 4657^2 + 2492^2 .

It is a cyclic number.

It is not a de Polignac number, because 27897713 - 2¹⁰ = 27896689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27897733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13948856 + 13948857.

It is an arithmetic number, because the mean of its divisors is an integer number (13948857).

Almost surely, 2^27897713 is an apocalyptic number.

It is an amenable number.

27897713 is a deficient number, since it is larger than the sum of its proper divisors (1).

27897713 is an equidigital number, since it uses as much as digits as its factorization.

27897713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 44.

The square root of 27897713 is about 5281.8285659419. The cubic root of 27897713 is about 303.2886798443.

The spelling of 27897713 in words is "twenty-seven million, eight hundred ninety-seven thousand, seven hundred thirteen".